Fricasse or any braise will be good. I made mine pulled pork style by slow cooking them in a flavorful liquid til they fell off the bone and mixed them with my BBQ sauce. It took a long time, approx 6-8 hours, so get some beer and sit back. Found the braising recipe for pulled goose leg sliders on Field and Stream. You can also make sausage out of it.

I debone mine, grind it and make into everything from bratwurst, jerky, various sausages, meat sticks etc. I do add some ground pork but. It works great but watch out for steel shot! Glad to see someone else deals with the legs as there is a great deal of good usable meat. I just finished grinding about 40 lbs. and made a bunch of jerky, brats and sausage.